[storage] Improve iterators during TXN Commit
[storage] Improve iterators during TXN Commit

Summary:
There is no need to create vectors and zip them all together
at the end; just zip directly with the transactions.

Test Plan:
cargo test; CI

aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,libra/libra